Means for making terrazzo floors or cast-in-place terrazzo tile



Sept. 21,1926. 1,600,787

I L .ARDlT MEANS FOR MAKING TERRAZZO FLOORS; OR CAST IN.PLACE TERRAZZOTILE Filed May 29, 1925 2 Sheets-Sheet 1 ANGELO L.ARD|T I Fig.8. 0 A; W5

Sept. 51 1926. 1,600,787

A. L. ARDIT MEANS FOR MAKING TERRAZZO FLOORS OR CAST IN PLACE ,TERRAZZQTILE Filed May 29. 1925 2 Sheds-Sheet 2 ANGELO. L.ARIJIT.

to make a simulation ofmarble.

Patented Sept. 21, 1926.

1 ANGELO EL. annrr, onenannvinw Emeritus, am...

' eans.roa yra rmeannnnzzomoons on oasr-m -rracn rnnnazzo TILE.

Application near/ra 29, 1325. serial No. 33,695.

This invention relates nore particuljarlyv to composition flooring ofthe variety known as terrazzo or 'cast "iniplace terrazzo tile whichincludes a foundation or"'undercoat usually ofconcrete and a superposedthereonlayer coinpoundedof small pieces of marble united togeth'er witha'suitable bond Heretd forebrass strips have beenused in layingthe'terrazzo, such 'st'ripsbeing arranged to form panels or blocks andadapted to localize"cra-cking and also for the purpose-of ideveldping'.des'i 'ns, the upper "edges of such strip's constituting a levelinggauge to facilitate the applicationland' sni'oothingjof the superposedcomposition. Such brassstrips were'left inthe floor and constituted anitem of considerable ex-pence:

The object of the present invention is to provide means to facilitatethe laying of such floors and more especially such floors withdecorative borders, and in carrying out my inventionl provide molding orforming and 'kerfing strips preferably of brass, fibre or othersuitablehard material which can be removed and reused over and over againthereby greatly reducing the expense as compared with floors'inwhich'the aforementioned brass stripsare embodied. Be-

1 cause my' strips are 'removableithe borders can be 'made'of anydifferent colors to" suit the taste and fancyfofthe'owner ofthe buildingin which 'the floor is laid.

The invention is embodied in the examples herein shown and described thefeatures'of novelty being finally claimed.

In the accompanying drawin'g Figure 1 illustrates'in perspectiveja shortstrip having a wide projecting head such as can be used'in the larger orwall border in connection with similar long strips for forming blockssurrounded by borders of cube designs.

Fig. 2 is a similar view of a long strip such as referred to in thedescription of Fig. 1 with a transverse tapered web at one end.

Fig. 3 is a. similar view of a long strip like that shown in Fig. 2without the transverse end web.

Fig. i is a cross section of such a strip as shown in Figs. 1, 2 or 3showing it inserted in the cement under coat or foundation and beforethe top coat or panels are laid.

Fig. 5 is a similar view showing thetop coat laid.

'cu'sl1ioiiing, stri1 3 of paper, V felt or" other y elding materialapplied for thepurpose' of Fig. 6 is a similar view showingfthestrip iremoved from the two coats. V

Fig. 1s a view similar to Fig. t showing the cube border applied andalso showing);"a

preventing or localizing cracking;

Fig.. 8'illustrates a modification of-"fo-rm' of. strip forpermittingfthe' joining of strips to effectcontinuityof thedivi'sion ofthe fe'undation'into blocks. 7 Fig..9lis'.:i top plan view of afloor-laid accordingto my invention as it appears at the corner ofaroom. a I i Fig. 10 is a plan view-of. the lower side ofv the strips asshown in Figs." 1, 2 and 3 arranged to prepare'the floor as shown} inFig. 10, said view illustrating how' the formsof said 'stripsiwhensojoined are adaiptedto score continuous.linesjaround a paneam along thewall border. Referring. more particularly to Figs. 1, 2 and 3the stripsare formed of tapering cross section in the vertical webor'foundationpenetrating portion the upper or thicgei' anargin being extended oroffset lat erallyto fo'r'in ahead 16 to niolda'suitable channel orrecess on thebed orundercoat 18 i for the reception of weaned cubes ortile-like blocks to -form anprnainental border. around the "11121111panels o'r' squares of eral'face of thehead atli'fbe slightlybev eled orinclined from the lower corner uplward and' outward' frointhe'p0TtlO11l5 to permit the withdrawal ofthat portion .of the strip frointhe work without fracturing the edges of the panels. Some 'ofth'estrips, such as shown in Fig. 2, areforined with transverse penetratingportions 15 constituting angular continuations of the longitudinalportions.

In Figs. 4:, 5, 6 and method of using the strips as shown in Figs. 1, 2and 3. V l

In practicethe foundation or undercoat 18 of the usual material andsuitable'thickness is first laid and leveled and before it has hardenedthe tapered blades 15 are shoved into it as depicted in Fig.4; When thestrips are so placed the head portions constitute the sides of molds forreceiving and determining the thickness of the plastic 7 is illustratedthe 5 cast in place panels 19 as shown in Fig. 5

the'upper surface of said heads forming guides to aid in levelingandsmoothing the panels. After the blocks or panels 19 have sufficientlyhardened so as not to slack down but beforethey have completely hard-[adapted to be taken with the fingers of the hand or toreceive asuitable lifting tool'.'

After .the floor is molded as illustrated in Fig. 6" and has completelyhardened a strip of paper or roofing felt 21 may be placed i l the cutsupplemented with a filling of plastic material 22to the level of theunder coat; The space formed by the head is then filled with the cubes0r tile-like blocks 23 ofthe same or different colors laid in with asuitable cementing liquid to hold them solidly in place. f A fraction offinished floor at the corner of a room asformed by the stripsillustrated in Figs. 1, 2 and- 8 and the method of using them asdescribed and illustrated in connection with Figs. 4, 5, 6 and 7 isshown in Fig. 91 where corresponding characters of reference 21, 22 and23 have been applied to designate the paper or felt the plastic materialof the p'anels'and the cubes respectively. The narrow panels 23 andsmall squares at the corners in this view form a wide border around thewalls of the room .er side when arranged to form such a floor asillustrated in Fig. 9 it being noted that the transverse webs 15 alinewith the main 1 webs 15 to form practically continuous divention asclaimed; for example instead of stantial continuity of the penetratingportion ofthe stripat corners can be effected by'cutting away a portionof the head of cne strip as indicated at 25 in Fig. 8 so that thepenetrating web at the cut-away end can have superposed on it theprojecting head of another strip in any desired angular relation withthe penetrating webs contacting.

lVith my construction the strips can be so arranged that some or all ofthe panels can be made of any desired polygonal design, which will be ofespecial advantage in forming ornamental central panels for'the floor.

' What I claim is: j I

r 1. Means to aid in the laying of plastic terrazzo floors and othersurfaces which in clude panels andornamenting linesof cubes adjacentthereto, said means consisting of. a

removable strip having a tapered blade-like concrete-bed-penetratingportion to form a panel-cracking localizing recess in said bed, and ahead portionprojecting laterally from the thicker edge of said stripadapted to form aside of a panel mold and also to leave a seat upon saidbed adjacent the panel 'forthe reception of said cubes.

2. Means to aid in the laying of plastic terrazzo floors and othersurfaces Which inolrde panels and ornamenting lines of cubes adjacentthereto, said means consisting of a removable strip having a taperedbladelike c0ncretebed penetrating portion to form a panel-crackinglocalizing recess in said bed, and a head portion projecting laterallyfrom the thicker edge of said strip adapted to form'a side of a panelmold and also to leave a seat upon said'bed adjacent the panel for thereception of said cubes, said penetrating blade having a fractionalportion similar in form to the blade standing at an angle thereto belowsaid laterally projecting head portion to extend the panelcrackinglocalizing recess around the corner ANGELO L. ARDIT.

of a panel.

